First, whether there are symptoms of allergy, go to see if there are skin lesions on the body, such as rashes and pimples of the wind mass. At this time, we should go to the dermatology department for specific treatment, according to the situation of allergy and the cause of allergy for specific treatment. Second, whether it is in contact with some allergens in life, should go to avoid allergens. For example, some people may develop contact dermatitis, perhaps on their hands or body skin, such as touching glass, door walls, door handles may produce contact allergic dermatitis. This time, it is not necessary to worry too much, is to reduce to contact, can use an ice towel compress, can effectively reduce the symptoms of itching. Usually the whole body itching may be caused by allergies, should not be filtered to anxiety and worry, the targeted treatment can be.